| /******************************************************************************* |
| |
| Intel(R) Gigabit Ethernet Linux driver |
| Copyright(c) 2007-2012 Intel Corporation. |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms and conditions of the GNU General Public License, |
| version 2, as published by the Free Software Foundation. |
| |
| This program is distributed in the hope it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| more details. |
| |
| You should have received a copy of the GNU General Public License along with |
| this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| The full GNU General Public License is included in this distribution in |
| the file called "COPYING". |
| |
| Contact Information: |
| e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| |
| *******************************************************************************/ |
| |
| #include "igb.h" |
| #include "e1000_82575.h" |
| #include "e1000_hw.h" |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/sysfs.h> |
| #include <linux/kobject.h> |
| #include <linux/device.h> |
| #include <linux/netdevice.h> |
| #include <linux/hwmon.h> |
| #include <linux/pci.h> |
| |
| #ifdef CONFIG_IGB_HWMON |
| /* hwmon callback functions */ |
| static ssize_t igb_hwmon_show_location(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
| dev_attr); |
| return sprintf(buf, "loc%u\n", |
| igb_attr->sensor->location); |
| } |
| |
| static ssize_t igb_hwmon_show_temp(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
| dev_attr); |
| unsigned int value; |
| |
| /* reset the temp field */ |
| igb_attr->hw->mac.ops.get_thermal_sensor_data(igb_attr->hw); |
| |
| value = igb_attr->sensor->temp; |
| |
| /* display millidegree */ |
| value *= 1000; |
| |
| return sprintf(buf, "%u\n", value); |
| } |
| |
| static ssize_t igb_hwmon_show_cautionthresh(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
| dev_attr); |
| unsigned int value = igb_attr->sensor->caution_thresh; |
| |
| /* display millidegree */ |
| value *= 1000; |
| |
| return sprintf(buf, "%u\n", value); |
| } |
| |
| static ssize_t igb_hwmon_show_maxopthresh(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct hwmon_attr *igb_attr = container_of(attr, struct hwmon_attr, |
| dev_attr); |
| unsigned int value = igb_attr->sensor->max_op_thresh; |
| |
| /* display millidegree */ |
| value *= 1000; |
| |
| return sprintf(buf, "%u\n", value); |
| } |
| |
| /* igb_add_hwmon_attr - Create hwmon attr table for a hwmon sysfs file. |
| * @ adapter: pointer to the adapter structure |
| * @ offset: offset in the eeprom sensor data table |
| * @ type: type of sensor data to display |
| * |
| * For each file we want in hwmon's sysfs interface we need a device_attribute |
| * This is included in our hwmon_attr struct that contains the references to |
| * the data structures we need to get the data to display. |
| */ |
| static int igb_add_hwmon_attr(struct igb_adapter *adapter, |
| unsigned int offset, int type) { |
| int rc; |
| unsigned int n_attr; |
| struct hwmon_attr *igb_attr; |
| |
| n_attr = adapter->igb_hwmon_buff.n_hwmon; |
| igb_attr = &adapter->igb_hwmon_buff.hwmon_list[n_attr]; |
| |
| switch (type) { |
| case IGB_HWMON_TYPE_LOC: |
| igb_attr->dev_attr.show = igb_hwmon_show_location; |
| snprintf(igb_attr->name, sizeof(igb_attr->name), |
| "temp%u_label", offset); |
| break; |
| case IGB_HWMON_TYPE_TEMP: |
| igb_attr->dev_attr.show = igb_hwmon_show_temp; |
| snprintf(igb_attr->name, sizeof(igb_attr->name), |
| "temp%u_input", offset); |
| break; |
| case IGB_HWMON_TYPE_CAUTION: |
| igb_attr->dev_attr.show = igb_hwmon_show_cautionthresh; |
| snprintf(igb_attr->name, sizeof(igb_attr->name), |
| "temp%u_max", offset); |
| break; |
| case IGB_HWMON_TYPE_MAX: |
| igb_attr->dev_attr.show = igb_hwmon_show_maxopthresh; |
| snprintf(igb_attr->name, sizeof(igb_attr->name), |
| "temp%u_crit", offset); |
| break; |
| default: |
| rc = -EPERM; |
| return rc; |
| } |
| |
| /* These always the same regardless of type */ |
| igb_attr->sensor = |
| &adapter->hw.mac.thermal_sensor_data.sensor[offset]; |
| igb_attr->hw = &adapter->hw; |
| igb_attr->dev_attr.store = NULL; |
| igb_attr->dev_attr.attr.mode = S_IRUGO; |
| igb_attr->dev_attr.attr.name = igb_attr->name; |
| sysfs_attr_init(&igb_attr->dev_attr.attr); |
| rc = device_create_file(&adapter->pdev->dev, |
| &igb_attr->dev_attr); |
| if (rc == 0) |
| ++adapter->igb_hwmon_buff.n_hwmon; |
| |
| return rc; |
| } |
| |
| static void igb_sysfs_del_adapter(struct igb_adapter *adapter) |
| { |
| int i; |
| |
| if (adapter == NULL) |
| return; |
| |
| for (i = 0; i < adapter->igb_hwmon_buff.n_hwmon; i++) { |
| device_remove_file(&adapter->pdev->dev, |
| &adapter->igb_hwmon_buff.hwmon_list[i].dev_attr); |
| } |
| |
| kfree(adapter->igb_hwmon_buff.hwmon_list); |
| |
| if (adapter->igb_hwmon_buff.device) |
| hwmon_device_unregister(adapter->igb_hwmon_buff.device); |
| } |
| |
| /* called from igb_main.c */ |
| void igb_sysfs_exit(struct igb_adapter *adapter) |
| { |
| igb_sysfs_del_adapter(adapter); |
| } |
| |
| /* called from igb_main.c */ |
| int igb_sysfs_init(struct igb_adapter *adapter) |
| { |
| struct hwmon_buff *igb_hwmon = &adapter->igb_hwmon_buff; |
| unsigned int i; |
| int n_attrs; |
| int rc = 0; |
| |
| /* If this method isn't defined we don't support thermals */ |
| if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) |
| goto exit; |
| |
| /* Don't create thermal hwmon interface if no sensors present */ |
| rc = (adapter->hw.mac.ops.init_thermal_sensor_thresh(&adapter->hw)); |
| if (rc) |
| goto exit; |
| |
| /* Allocation space for max attributes |
| * max num sensors * values (loc, temp, max, caution) |
| */ |
| n_attrs = E1000_MAX_SENSORS * 4; |
| igb_hwmon->hwmon_list = kcalloc(n_attrs, sizeof(struct hwmon_attr), |
| GFP_KERNEL); |
| if (!igb_hwmon->hwmon_list) { |
| rc = -ENOMEM; |
| goto err; |
| } |
| |
| igb_hwmon->device = hwmon_device_register(&adapter->pdev->dev); |
| if (IS_ERR(igb_hwmon->device)) { |
| rc = PTR_ERR(igb_hwmon->device); |
| goto err; |
| } |
| |
| for (i = 0; i < E1000_MAX_SENSORS; i++) { |
| |
| /* Only create hwmon sysfs entries for sensors that have |
| * meaningful data. |
| */ |
| if (adapter->hw.mac.thermal_sensor_data.sensor[i].location == 0) |
| continue; |
| |
| /* Bail if any hwmon attr struct fails to initialize */ |
| rc = igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_CAUTION); |
| rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_LOC); |
| rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_TEMP); |
| rc |= igb_add_hwmon_attr(adapter, i, IGB_HWMON_TYPE_MAX); |
| if (rc) |
| goto err; |
| } |
| |
| goto exit; |
| |
| err: |
| igb_sysfs_del_adapter(adapter); |
| exit: |
| return rc; |
| } |
| #endif |